单例类：静态属性还是非静态属性？ [英] Singleton class: static properties or non-static properties?

问题描述

我正在编程一个充当Singleton的Class。我想知道，这个类有非静态属性是否有意义？

伪代码示例：

  class Foo extends MySingletonClass {
 
 private static string bar; 
私人字符串baz; 
 
 / *更多代码在这里* / 
 
} 
  

解决方案

静态属性没有错，但在单例中是多余的。

另外，如果你有静态属性，然后你需要将类更改为不再是单例，您将需要更改属性（作为访问它的每个代码）。所以我建议你不要标记为静态，除非真的需要。

I´m programming a Class which acts as a Singleton. I was wondering, does it make sense to have non-static properties for this class?

Pseudocode example:

class Foo extends MySingletonClass {

    private static string bar;
    private string baz;

    /* more code here */

}

解决方案

It's not wrong to have static properties, but it's redundant in a singleton.

Also, if you have static properties, and later you need to change the class to not be a singleton no more, you'll need to change the properties either (as every code that access it). So I recommend you not to mark as static, unless really needed.

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